# ThreeDSecureAuthenticationAcsWindowSize

Enum · GraphQL API

An override field that a merchant can pass in to set the challenge window size to display to the end cardholder. The ACS will reply with content that is formatted appropriately to this window size to allow for the best user experience. The sizes are width x height in pixels of the window displayed in the cardholder browser window.

## Values

- `FULL_PAGE`
- `W250_H400`
- `W390_H400`
- `W500_H600`
- `W600_H400`

## Used by

- [ThreeDSecureLookupTransactionInformationInput](/braintree/graphql/reference/types/three-d-secure-lookup-transaction-information-input) — Input; acsWindowSize

## GraphQL definition

```graphql
enum ThreeDSecureAuthenticationAcsWindowSize {
  FULL_PAGE
  W250_H400
  W390_H400
  W500_H600
  W600_H400
}
```

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[View the complete GraphQL schema on GitHub](https://raw.githubusercontent.com/braintree/graphql-api/refs/heads/master/schema.graphql)